It is a happy number.
It is a nude number because it is divisible by every one of its digits.
It is a d-powerful number, because it can be written as 1 + 32 + 211 + 34 + 1 + 217 .
It is a nialpdrome in base 12.
It is a congruent number.
2133212 is an apocalyptic number.
133212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
133212 is a wasteful number, since it uses less digits than its factorization.
133212 is an evil number, because the sum of its binary digits is even.
The square root of 133212 is about 364.9821913464. The cubic root of 133212 is about 51.0717943103.
Adding to 133212 its reverse (212331), we get a palindrome (345543).
The spelling of 133212 in words is "one hundred thirty-three thousand, two hundred twelve".